Because no one has yet to invent a bouncy ball that is square or a triangle shape. Invent it yourself!! I'm sure it will work as long as you use something along the lines of rubber.
Because rubber is bouncy!!!! and bouncy balls are made out of rubber.
rare bouncy balls
For free and faster movements
3
One common brand name is Mega Balls.... (My Balls)
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Norman Stingley invented the bouncy ball.
To bounce...
yes
yes
Bouncy balls are made from materials like rubber or plastic and are designed to rebound off surfaces when thrown. They come in various sizes and colors, with some featuring unique patterns or designs. Bouncy balls are popular toys for children and used in various games and activities.
Bouncy balls were invented by chemist Norman Stingley in 1965 in the United States. Stingley discovered the material that gave bouncy balls their unique properties while working on a new synthetic rubber compound.